Biomagnetic Measurements in Unshielded Environment

摘要: Measurements of biomagnetic fields are becoming more and important in medical research. It is about 25 years since Baule McFee (1963) first used induction coils to detect the magnetic field human heart. The weak many organs body could not be studied until Cohen et al. (1970) SQUID (Superconducting Quantum Interference Device) showed that it effective study fields. systems orders magnitude sensitive low frequency arising within than (see Fig. 1).